The BBC's Abdinoor Aden in Nairobi says that Upendo Children's Home, where Durham was accused of abusing more than 10 children - some as young as four years, has welcomed the sentence by an Oklahoma court.

It has put up a video on YouTube with the headline: "Upendo Children Celebrate Justice!!", showing the orphanage's founder telling her colleagues in Nairobi about the sentencing, which she had attended.

"It is a new beginning for them," Eunice Menja said.

In court, Ms Menja fought back tears as she read a statement, saying that the sexual abuse carried out by Durham was "not only a betrayal of the Upendo mission but of the trust Upendo placed in him", the Associated Press news agency reports.

"Matthew Durham defiled the children. Matthew has no remorse. After he got caught, he still denied [the charges],'' she is quoted as saying.

'Worst nightmare'

Although Durham said he was innocent of the charges, he added that he was sorry that the accusations against him had damaged the orphanage.

"The Upendo kids do not deserve this,'' Durham said, AP reports.

Judge David Russell said Durham, who appeared in court in a prison-issued orange jumpsuit, was the abused children's "worst nightmare come true", it reported.

The court also ordered the former charity worker, who was arrested in 2014 at the home of his parents in the US after fleeing Kenya, to pay restitution of $15,863 (£11,000).